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Interactions that increase your risk of side effects Side effects from sildenafil: Taking sildenafil with certain medications raises your risk of side effects from sildenafil. CONTRAINDICATIONS Nitrates Consistent with its known effects on the nitric oxide/cGMP pathway [see CLINICAL PHARMACOLOGY], VIAGRA was shown to potentiate the hypotensive effects of nitrates, and its administration to patients who are using nitric oxide donors such as organic nitrates or organic nitrites in any form either regularly and/or intermittently is therefore contraindicated. Jen Marsico, RPh Q: I am 66 years old with chronic hypertension controlled with medications. Viagra works by inhibiting the chemical phosphodiesterase, which leads to an increase in the effect of nitric oxide.

Levitra (vardenafil) is similar to Viagra (sildenafil), in that it lasts about five hours; Viagra (sildenafil) lasts about four hours. You should always consult your doctor or other healthcare professional before taking any medication. This means that the clearance of sildenafil from the body would increase and blood concentrations of the medication could decrease. The patent for Viagra (sildenafil) will not expire until 2012; therefore, no generic form is currently available.

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Sildenafil oral tablet is available as the brand-name drugs Viagra and Revatio. If the website has a phone number, can you speak to a pharmacist directly? Sildenafil works in different ways, depending on the condition it’s being used to treat. Viagra (sildenafil) is an oral drug that is used for treating impotence (or erectile disfunction, ED, the inability to attain or maintain a penile erection).

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Storage Store sildenafil tablets at room temperature between 59°F and 86°F (15°C and 30°C). Revatio For pulmonary arterial hypertension, Viagra comes in white, round, film-coated tablets. Nervous: seizure, seizure recurrence, anxiety, and transient global amnesia. By inhibiting this enzyme, blood flows freely to the female genitalia leading to increased sensitivity and increased vaginal lubrication. Viagra (sildenafil) is an oral drug that is used for treating impotence (or erectile disfunction, ED, the inability to attain or maintain a penile erection).

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Nitrate drugs such as nitroglycerin and isosorbide dinitrate (which are commonly used to treat chest pain) do not mix well with Viagra, and the complications can be dangerous. For ED: Sildenafil works by increasing blood flow to the penis. For PAH: This medication may not work as well or may stop working completely. Other common side effects of Viagra include warmth or redness in your face, neck, or chest; stuffy nose; headache; upset stomach; and back pain. S. if this question does not belong here? please move to appropriate section. Especially tell your healthcare provider if you take any of the following: VIAGRA does not protect against sexually transmitted diseases, including HIV.